Paper machine in order to prevent breakage of the paper on the couch press or wire cloth



Feb. 3, 1931. JACOBSEN 1,791,412

PAPER MACHINE IN ORDER TO PREVENT BREAKAGE OF THE PAPER ON THE COUCHPRESS OR WIRE CLOTH Filed Jan. 3, 1930 2 tion with ifull.

Patented j'Feb. 3, 1933 inns sn'noa sacossnn,

PAPER m 01mm TO PREVENT Pars or Hoxxsunn, NOB-WAY EQE BREAKAGE OI THEPAPE- QN' THE GD'UGE PRESS OB WIRE CLQTH 4 Application filed-January 3,i930, Serial No. 418,326, and in Norway January 25, 1929;

On thecouch-part oft a paper machine it happens that the paper attachesto the wire "cloth at some point, so as to be carried with the .wirecloth towards the lower couch cyline der. In thistmanner the paperis'caused to 'be torn along one or more lines forming an acute anglebetween them or between the line and the edge ofthe paper,'and after acertain interval .the paper will be torn from an edge to edge so as tobe completely broken.

. The present invention has for'its object to preventthe breakage orinterruption of the continuous web of paper in these; cases, and this isobtained in accordance with the'inven 1% tion by providing means fordividing the continuous web of paper in two arallel stripsby means of ajet of water, sai means.

- being actuated automatically as soon as tear- .ing of the papercommences.

By dividing the continuous web of paper. in this manner, the extensionof the fissure directly across the paper web is prevented, and bygradually moving the jet towards the edge which has been torn, thenormal condif width of paper is re estab lished. A a v j V I The jet maypreferably be locateglappro'x imately midway between the edges ofthe.paper. web, but obviously it may also be 39 placed near aone of theedges in case it is g proved that e pa er'has a. tendency to break in acert in ace, for instance owing to a defect in the wlre' cloth or thelike. 7 A I O Also, if'so desired, two or more jets maybe 5 provided,and said jets may be adapted to be v O "a couch cy mder, means fordlvldmg the paoperated simultaneously or selectively. I

i The automatic-actuation of the jet isob- P tained in accordance withthe invention b condficting the part'ofthepapdr web, whie is torn oh by'the wireicloth so as to be carried Y along with the -1same,' on .to'aplate or receptacle which is connected ina suitable manner 1 'with meansactuating the jet as soon as the weight thereof isincreased owing to thepaperaccumulated on the same.

said dividing means in casetearing of the vice after the actuation ofthe jet by means of the automatic device. 4

1 is the upper and 2 the lower couch cylinder. 3 is the wire cloth and 4the felt on which the paper 5 is to be carried from the lower couchcylinder. In case a part of the paper web is carried along with the wireround the lower couch cylinder, it is removed from the wire cloth bymeans of auxiliary cylinder 6, so as to drop on to the hinged plate 7This plate is connected for instance by means of a flexible 'wire or thelike with a cook or valve 9 in the water pipe 10 leading to a jet 11located over Q a the paper web on the wire cloth 3, at apointapproximately midway between the edges of the paper. When a certainamount of paper has-accumulated on plate'7, as indicated on Fig. 2, theplate tilts downwards, owing to n the increase ofweight, opening valve 9so as to operate the jet, which will then divide the paper web in twoparallel stri s.

The tearing of the paper w accordingly stop when reaching the divisionlines. Then r the jet is movedin some suitable manner toj'wardsthesideof the division line on which the tearin of the paper hascommenced, thus re-establis ing the paper web in full width. It will beunderstood that the actuation of the jet instead oftaking place bydirect connection as indicated, may also take place by the intermissionof asuitable relay, for instance of the electric type. Claim In a pa ermaking machine a wire cloth,

er web on the'wire cloth in two or more parallel strips and meansactuated by the weight a of torn oii paper for automatically actuatingpaper web-should be started owing to part of the paper being carriedalong with the wire cloth about the couch cylinder. p A In testimonwhereof, I aflix my signature;

LS ANDOR J ACOB SENJ One form of the invention is illustrated on I thedrawing in a purely diagrammatic manner."-'--;

Fig. 1' illustratesthe device with 'all parts in normal position, andFig. 2 the same de-

